Hazardous locations, where the atmosphere may contain dust, gas, or vapor in quantities large enough to be explosive, require specially designed motors. Nidec Corporation manufactures durable, efficient hazardous location motors under our LEROY-SOMER™ and U.S. MOTORS® brands. These motors are built to withstand harsh conditions and contain sparks and explosions, preventing external ignition.

LEROY-SOMER Brand
Founded in 1919 by Marcellin Leroy in France, the LEROY-SOMER brand now employs nearly 10,000 people worldwide and sells its motors globally. Known for their resilience in corrosive and harsh environments, our hazardous location motors can endure high temperatures and extreme conditions while maintaining efficiency and quality. Many of these robust motors are non-sparking, while others feature flameproof, cast-iron frames to keep your hazardous location applications running under the toughest conditions.

U.S. MOTORS Brand
Since 1908, the U.S. MOTORS® brand has been synonymous with top-quality products. Our hazardous location motors comply with industry regulations, prioritizing the health and safety of your workers. These motors are not only energy-efficient and safe but also cost-effective and long-lasting. For unique requirements, our innovative engineering teams can customize motors to your specifications, reflecting our commitment to excellence in hazardous location motors.

Compliance and Safety
The National Electrical Code (NEC®) categorizes hazardous locations into classes and groups based on the specific explosive agent present. For a complete list, refer to the NFPA (National Fire Protection Association) publication 487M. Underwriters’ Laboratories (UL®) tests and lists motors suitable for these explosive atmospheres. However, using a UL®-listed device does not automatically ensure full compliance with the NEC® or local codes. Please consult Chapter 5 of the NEC®, local building codes, OSHA requirements, and insurance inspectors for comprehensive guidelines on hazardous location motor procedures